/**
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * This file is a part of the CANN Open Software.
 * Licensed under CANN Open Software License Agreement Version 1.0 (the "License").
 * Please refer to the License for details. You may not use this file except in compliance with the License.
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
 * See LICENSE in the root of the software repository for the full text of the License.
 */

/**
 * @file main.cpp
 */


 #include <iostream>
 #include <vector>
 #include "acl/acl.h"
 #include "acl_stft.h"
 
 #define CHECK_RET(cond, return_expr) \
   do {                               \
     if (!(cond)) {                   \
       return_expr;                   \
     }                                \
   } while (0)
 #define LOG_PRINT(message, ...)     \
   do {                              \
     printf(message, ##__VA_ARGS__); \
   } while (0)
 int64_t GetShapeSize(const std::vector<int64_t>& shape) {
   int64_t shapeSize = 1;
   for (auto i : shape) {
     shapeSize *= i;
   }
   return shapeSize;
 }
 int Init(int32_t deviceId, aclrtStream* stream) {
   // 固定写法，AscendCL初始化
   auto ret = aclInit(nullptr);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclInit failed. ERROR: %d\n", ret); return ret);
   ret = aclrtSetDevice(deviceId);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSetDevice failed. ERROR: %d\n", ret); return ret);
   ret = aclrtCreateStream(stream);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtCreateStream failed. ERROR: %d\n", ret); return ret);
   return 0;
 }
 template <typename T>
 int CreateAclTensor(const std::vector<T>& hostData, const std::vector<int64_t>& shape, void** deviceAddr,
                     aclDataType dataType, aclTensor** tensor) {
   auto size = GetShapeSize(shape) * sizeof(T);
   // 调用aclrtMalloc申请device侧内存
   auto ret = aclrtMalloc(deviceAddr, size, ACL_MEM_MALLOC_HUGE_FIRST);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMalloc failed. ERROR: %d\n", ret); return ret);
   // 调用aclrtMemcpy将host侧数据拷贝到device侧内存上
   ret = aclrtMemcpy(*deviceAddr, size, hostData.data(), size, ACL_MEMCPY_HOST_TO_DEVICE);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMemcpy failed. ERROR: %d\n", ret); return ret);
   // 计算连续tensor的strides
   std::vector<int64_t> strides(shape.size(), 1);
   for (int64_t i = shape.size() - 2; i >= 0; i--) {
     strides[i] = shape[i + 1] * strides[i + 1];
   }
   // 调用aclCreateTensor接口创建aclTensor
   *tensor = aclCreateTensor(shape.data(), shape.size(), dataType, strides.data(), 0, aclFormat::ACL_FORMAT_ND,
                             shape.data(), shape.size(), *deviceAddr);
   return 0;
 }
 int main() {
   // 1. （固定写法）device/stream初始化，参考acl对外接口列表
   // 根据自己的实际device填写deviceId
   int32_t deviceId = 0;
   aclrtStream stream;
   auto ret = Init(deviceId, &stream);
   // check根据自己的需要处理
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("Init acl failed. ERROR: %d\n", ret); return ret);
   // 2. 构造输入与输出，需要根据API的接口自定义构造
   std::vector<int64_t> selfShape = {5};
   std::vector<int64_t> windowShape = {4};
   std::vector<int64_t> outShape = {3, 1, 2};
   void* selfDeviceAddr = nullptr;
   void* windowDeviceAddr = nullptr;
   void* outDeviceAddr = nullptr;
   aclTensor* self = nullptr;
   aclTensor* window = nullptr;
   aclTensor* out = nullptr;
   std::vector<float> selfHostData = {1, 6, 8, 5, 7};
   std::vector<float> windowHostData = {1, 1, 1, 1};
   std::vector<float> outHostData = {0, 0, 0, 0, 0, 0};
   // 创建self aclTensor
   ret = CreateAclTensor(selfHostData, selfShape, &selfDeviceAddr, aclDataType::ACL_FLOAT, &self);
   // 创建window aclTensor
   ret = CreateAclTensor(windowHostData, windowShape, &windowDeviceAddr, aclDataType::ACL_FLOAT, &self);
   CHECK_RET(ret == ACL_SUCCESS, return ret);
   // 创建out aclTensor
   ret = CreateAclTensor(outHostData, outShape, &outDeviceAddr, aclDataType::ACL_FLOAT, &out);
   CHECK_RET(ret == ACL_SUCCESS, return ret);
   int n_fft = 4;
   int hop_length = 2;
   int win_length = 4;
   bool normalized = false;
   bool onesided = true;
   bool returnComplex = false;
   // 3. 调用CANN算子库API，需要修改为具体的Api名称
   uint64_t workspaceSize = 0;
   aclOpExecutor* executor;
   // 调用aclStft第一段接口
   ret = aclStftGetWorkspaceSize(self, window, out, n_fft, hop_length, win_length, normalized, onesided, returnComplex, &workspaceSize, &executor);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclStftGetWorkspaceSize failed. ERROR: %d\n", ret); return ret);
   // 根据第一段接口计算出的workspaceSize申请device内存
   void* workspaceAddr = nullptr;
   if (workspaceSize > 0) {
     ret = aclrtMalloc(&workspaceAddr, workspaceSize, ACL_MEM_MALLOC_HUGE_FIRST);
     CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("allocate workspace failed. ERROR: %d\n", ret); return ret);
   }
   // 调用aclStft第二段接口
   ret = aclStft(workspaceAddr, workspaceSize, executor, stream);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclStft failed. ERROR: %d\n", ret); return ret);
   // 4. （固定写法）同步等待任务执行结束
   ret = aclrtSynchronizeStream(stream);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSynchronizeStream failed. ERROR: %d\n", ret); return ret);
   // 5. 获取输出的值，将device侧内存上的结果拷贝至host侧，需要根据具体API的接口定义修改
   auto size = GetShapeSize(outShape);
   std::vector<float> resultData(size, 0);
   ret = aclrtMemcpy(resultData.data(), resultData.size() * sizeof(resultData[0]), outDeviceAddr,
                     size * sizeof(resultData[0]), ACL_MEMCPY_DEVICE_TO_HOST);
   CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return ret);
   for (int64_t i = 0; i < size; i++) {
     LOG_PRINT("result[%ld] is: %f\n", i, resultData[i]);
   }
   // 6. 释放aclTensor，需要根据具体API的接口定义修改
   aclDestroyTensor(self);
   aclDestroyTensor(window);
   aclDestroyTensor(out);
   // 7. 释放device资源，需要根据具体API的接口定义修改
   aclrtFree(selfDeviceAddr);
   aclrtFree(windowDeviceAddr);
   aclrtFree(outDeviceAddr);
   if (workspaceSize > 0) {
     aclrtFree(workspaceAddr);
   }
   aclrtDestroyStream(stream);
   aclrtResetDevice(deviceId);
   aclFinalize();
   return 0;
 }